Update el-GR.ini

Small typo on page title, in Greek language Installation
Remove com_services language files in administrator/
Modify description for Site-Offline in front-end
 $ [#32470] Incomplete value of a key in en-GB.com_templates.ini admin
language file  Thanks Jozsef Tamas Herczeg
(Fix #2372)
Merge pull request #2376 from Buddhima/fixes_for_com_config

Remove unnecessary language files
2 ini files deleted = chnage in install.xml
small change in string
Update the Framework DI Container to the latest version. No BC breaks.
Merge pull request #2377 from dongilbert/UpdateDICode

Update the Framework DI Container to the latest version. No BC breaks.
Fix weblink and newsfeed edit for markup changes.
[#32421] Installation 3.2.b2 fails on PostgreSQL (Fix #2369)
[#31604] Invalid column name 'RowNumber' from articles model with MS SQL Server (Fix #1744)
PHPCS
 # [#32460] Installation beta2 hangs on PHP5.3.3-7  Thanks Tobias Zulauf
(Fix #2380)
Merge pull request #2370 from karantzis/patch-1

Update el-GR.ini
Fix problem with category filter in article manager.